USRE21718E - Take-off mechanism - Google Patents

Description

Feb. 18, 1941. o. D. McFARLAND Erm. Re. 21,718

TAKE-OFF MECHANISM Original Filed Sept. 29, 1937 4 Sheets-Sheet l VTL WMZQ @MW www5@ Feb. 18, 1941. o. lj, MGFARLAND Erm. Re. 21,718

l TAKE-OFF MECHANISM Original Filed Sept. 29, 1937 4 Sheets-Sheet 2 Ime Feb. 18, 1941. o, D, MQFARLAND E -l-AL Re. 21,718

TAKE-OFF MECHANISM original Filed sept. 29. '19:57

4 Sheets-Sheet 3 wm@ @g55/@ Feb. 18, 1941. o. D, MCFARLAND Erm. Re. 21,718

TAKE-OFF MECHANISM 4 Sheets-Sheet 4 Original Filed Sept. 29, 1937 Reisaued Feb. 18, 1941 PATENT OFFICE TAKE -OFF MECHANISM Owen D. McFarland and Alfred 0. Mickelson, Chicago, lll.. assigner: to Roofing Machinery Mfg. Co., Chicago, 1li., a corporation of Illinois Original No. 2,143,379, dated February 2l. 1939,

Serial No. 166,431, September 29, 1937. Application for reissue October 25, 1340, Serial No.

17 Claims.

'Ihe present mechanism -has been designed particularly to operate upon a traveling sheet of roofing material shortly after it has passed through a pair of cutting rollers, the purpose being to separate and remove the severed shingles,

whether of single or multiple units, for distribu` tion to a plurality of delivery stations. In lthe description to follow reference will be made to a machine which is illustrated in the accompanying drawings as va suggestive embodiment of our invention.

In the manufacture of rooilng shingles, it is important that means be provided for severing the sungles from a slitted sheet, and for removing the shingles' as severed to a plurality of stations preliminary to bundling. For doing this a take-olf mechanism is employed. It should be so constructed as to be adaptable toexlsting roofing machines so as to operate in conjunction therewith; and it should be speedy and certain in its operation so that the speed of travel of the roofing material through .the machine need not be retarded and so that the severed shingles which are taken off and deposited in different stacks will be piledevenly to facilitate tying and removal. These as well as various other objects and advantages are all realized by the mechanism of our invention of which a preferred embodiment is illustra-ted in the accompanying drawings in the manner following:

Figure l is a plan view of the delivery end-of a rooting machine to which is operatively connected the take-olf mechanism of our invention;

Fig. 2 is a side elevation thereof Fig, 3 is an enlarged detail in section taken on line 3-3 of Fig. 1;

Fig. 4 is a fragmentary perspective view showing the shingles in process of being separated With the details of manufacture of the roofing' sheet this invention is not concerned; it operates merely in conjunction with the delivery end of such a machine which includes suitable slitting rolls (not shown) for severing the sheet S, except for slight connecting webs, into shingles a, b, c. d

(Cl. 13d-84.5)

of single or multiple units (see Fig. 4) which are disposed in as many diiierent lanes lengthwise of the sheet. After leaving the cutting rolls the sheet continues its advance to be acted upon by the several agencies now to be described.

Referring now to Fig. 2, the sheet first passes between upper and lower feeding rolls III and ii, respectively. Upon leaving these rolls the sheet advances on to a support which comprises a plurality of endless conveyor belts I2 which 'travel around rolls Il and Il. The former of these rolls is positioned proximate to the feeding rolls so as to support the sheet immediately upon its emerging therebetween. The other roll Il, however, is located a desired distance away therefrom, preferably close to a pair of adjustable pulling rolls I5 and i6 between which the sheet is advanced. The pulling rolls are journaled for rotation within a frame I1 which furnishes a guide for blocks IB each forming a bearing for the upper roll. As by a screw-threaded shaft I9 operable with a hand wheel 2l the upper roll may be adjusted toward or from the lower roll whereby to exert a desired pressure upon the sheet which is passing therebetween.

Driving connections between the several rolls just described may be provided as illustrated in Fig. 1. From a source of power (not shown) a transmission belt2l is run over a pulley 22 on the shaft of the roll Ii whereby to produce rotation thereof. From a concentric pulley 23 a belt 24 is run over a smaller pulley 25 which is mounted on the shaft of the pulling roll I6 to transmit rotation thereto. Over a second pulley 26 concentric with the pulley 25 is trained a belt 21 which passes around a pulley 2B mounted on the shaft of the roll I l. By this system of transmission the belt 2l rotates both the feeding and pulling rolls, the latter, however, at a somewhat Ahigher peripheral speed; the endless conveyor belts whichtrain over the rolls I3 and I4 are also moved to support on their upper runs the sheet which is required to pass through the two sets of rolls just referred to.'

At a point intermediate of the feeding and pulling rolls is positioned a pair of idler rolls 30 and 3l. These rolls are mounted for rotation and adjustment, one with respect to the other, within a pair of supporting frames 32 which is itself adjustable lengthwise of the machine. As shown, the upper roll is journaled within bearings 33 adapted to be vertically adjusted as by means of a. screw 34 and hand Wheel 35 whereby to exert a'variable pressure on the sheet at this poi`nt.z.;e The lower roll 3l underlies the upper run of the 5s endlessbelnsotnstprsssunexerabytnsupperrollisdirectedagainstthesheetwhilesupported upon the belts. The frames 8! which mount the idler rolls are slidingly rested at each end upon a siderail Il of the machine bed (see Fig. 8) being guided betweerrlinsaced barsell` and ll. the latter of which is fo with withvwhich meshes a pinion Il upon a cross shaft Il having an operating hand wheel Il. The position of the cooperating idler rolls may accordingly Y be shifted toward or from either of the other pair of rolls previously described.

Upon leaving the feeding rolls the slitted sheet is tensioned by reason oi' the greater peripheral speed of rotation of the pulling rolls. In'conse` quence, the sheet tends to separate into individual shingles a, b, c and d (see Fig. 4) along its preslitted lines, designated as :s (longitudinal) and y" (transverse). From and after this moment the individual shingles, either completely or partly separated. are advanced processionally through diversins paths to a plurality of delivery stations. During this stage of their travel separation of the shingles from each other is completed. 'Ihe mechanism for attending to these operations will now be described.

At the delivery end of the machine are positioned spaced upright frame members ll each 'f mounting an upper bracket I8 between which is supported a cross shaft l1 to which are pivoted in side by side rrelation a plurality of handle.

levers `Il each having spaced pairs of spaced shoulders I9 and l0.. Proximate to these shoulders are opposite faces of a pair of vertically adjustable bars il each having in one face a shallow notch ilwherein Athe shoulder 49 may engage to lock the two bars in a definite operative pomtion; Between the lower end of each pair-of bars is rotatively supported a grooved sheave B around which runsjan endless narrow pulling and delivery belt 5I vwhich rides within one of the grooves of one ofthe upper pulling rolls Il. Each belt is Vmaintained taut by an extensible strut which, as shown. comprises two' telescoping tubes Il and I8. one yoked for pivotal connection with a pair of bars 5| andthe other for a like connection with a shaft 5! which is supported-fixedly between two brackets Il) extending from the frame i1, a compression spring Il exerting-op- -posite thrusts against the two tubes whereby to maintain the strut in an extended condition such that the belt remains taut. Each pair of bars 5I may be equipped with a lifting handle l2. as shown. To keep the grooves of the sheaves and 'feeding rolls clear of grit and foreign matter, we y provide small blades 63 one extending within each suchgroove as shown best in Fig. 6.

` t each pulling and delivery belt assembly just described, viz. the vertically adiustable bars and supported sheave together with extensible strut, we provide av duplicate assembly in a lower 'position which is proximate thereto. Inasmuch as` the parts of this lower pulling and delivery belt assembly are the same, we have designated them by like reference numerals with an l added. "The lower` pulling and delivery belts train over the lower pulling roll Il so that a shingle passing between these rolls is received between jthe'lowle'r rim of the upper belt and the upper run of the lower belt. 'l'he operative position of two associated pairs of bars li and ill (one above the other below) ls such that their respective sheaves will almost touch (see Fig. 3) therebymaintaining pulling engagement between the opposed faces of the belts 56 and 58| and the opposite laces of 'kteethy each' shingle up to the point of emergence from lanes longitudinally of the sheet. For example,

if the sheet be slitted to produce four shingles transversely thereof (as herein illustrated), there will be four groups of belts provided, one for each set of shingles a and d adjacent opposite edges of the sheet, and' one for each set of shingles b and c to the inside thereof. 'I'he sheavesfor each group of belts are positioned at an elevation which is different from that of the others proximate thereto so as to cause the shingles supported between each group of belts to advance through a plane which is diverse to that of the travel of the next adjacent line oi' shingles. In this manner the separation of the shingles from the sheet (and each other) is positively assisted by what is, in effect. a shearing action.

'l'he discharge end of each group of delivery belts lies opposite a board Il which is loosely rested in inclined position upona supporting rack IO. Each suchboard accordingly constitutes a delivery. station for one set of shingles, a, b,cordasthecase'maybe. Astheshingles are advanced successively beyond the ends of the delivery belts, they drop onto the inclined board of the proximate station and come to rest against an adjustablestop l1. A stack of shingles is thus built upwhich, when of adesired size. may be removed for bundling.

In some cases itmay be desirable to locate some ofthe delivery stations at points other than side by side. A tandem arrangement which provides a working passageway between stations close to the machine and other stations further removed therefrom is indicated in Fig. 9. For such an arrangement we provide an endless transmission belt Il extending between rolls 1I and`-12 withl other rolls 18 and 'Il supporting the v intermediate portion of the lower run of the belt at an-elevated level, and still other rolls 15 and Il doing the same for the upper run ofthe belt. Head room beneath this transmission belt is accordingly provided, permitting workmen to attend to the` delivery stations proximate to the machine lwithout interference.v Each transmission belt carries connected shingles which are disposedinaselectedlaneofthesheettoadistant point where we may provide upper and lower delivery'belts I1 and` 1l, respectively, with associated sheaves 'Il and Il, respectively, for directving the shingles upon inclined boards 8|.

, be maintained thereon at a point closer to the pulling rolls than the feeding rolls,.then the idler mns may be shined in that direction. The position which the idler rolls should occupy may be determined by conditions, the object being to assure of a complete and clean separation oi' shingles from the sheet and from each other.

l. In a take-oi! mechanism for shingles severed from a sheet, the combination o! a pair of grooved rolls through which the shingles are processionally advanced side by side, a plurality of upper and lower sheaves, adjustable swinging supports for the sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them, and engage opposite faces of, a succession of shingles, and an extensible strut with associated spring means in connection with each sheave for maintaining the supported belt taut.

2. In a take-ofi' mechanism for shingles severed from a sheet, the combination of a pair oi' grooved rolls through which the shingles are processionally advanced side by side, a plurality of upper and lower sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them, and engage opposite faces of, a succession of shingles, an extensible strut with associated spring means in connection with each sheave to maintain the supported belt taut, and means for supporting each sheave comprising a pivoted locking lever and a bar slidingly supported by said lever.

3. In a take-oil' mechanism for singles severed from a sheet, the combination of a pair of grooved rolls through which the shingles are processionally advanced side by side, a plurality of upper and lower sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them, and engage opposite faces of, a succession of shingles, an extensible strut with associated spring means in connection with each sheave to maintain the supported belt taut, and means for supporting each Vsheave at a xed vertical point without aifecting the tautness of its supported belt.

4. In a take-oit mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are processionally advanced side by side, a plurality of upper and lower sheaves, adjustable swinging supports for the sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them, and engage opposite faces of, a succession of shingles, and an. extensible strut with associated spring means in connection with each sheave for maintaining the supported belt. taut, the several sheave supports being independently adjustable whereby to vary the vertical position of each sheave and, in consequence thereof, the distance of separation between each pair oi' delivery belts.

5. In a take-off mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are processionally advanced side by side, a plurality of upper and lower sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them and engage opposite faces of, a succession of shingles, an extensible strut with associated spring means in connection with each sheave to maintain the supported belt taut, and means for supporting each sheave comprising a pivoted locking lever and a bar slidingly supported by said lever, the several sheave supporting means being independently adjustable whereby to vary the vertical position of each sheave and. in consequence thereof, the distance of separation between each pair of delivery belts.

6. In a take-oi! mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are processionally advanced side by side, a plurality oi' upper and lower sheaves, upper and lower delivery belts extending around said rolls and sheaves adapted to receive between them, and engage opposite faces of, a succession of shingles, an extensible strut with associated spring means in connection with each sheave to maintain the supported belt taut, and means for supporting each sheave at a iixed vertical point without ai'- fecting the tautness of its supported jbelt, the several sheave supporting means being independently adjustable whereby to vary the'vertical position of each sheave and, in consequence thereof, the distance of separation between each pair of delivery belts.

7. In a take-oil' mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are precessionally advanced side by side and, adjacent thereto, a plurality of delivery belts arranged in pairs, one over the other, in such manner as to receive a succession of shingles between the lower run of the upper belt and the upper run of the lower belt for engagement thereby, a sheave for each belt at a point remote from the rolls, and vertically adjustable tension mounting for each sheave whereby to maintain its associated belt taut.

8. In a take-off mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are precessionally advanced side by side and, adjacent thereto,

a. plurality of delivery belts arranged in pairs,

one over the other, in such manner as to receive a succession of shingles between the lower run vof the upper belt and the upper run of the lower belt for engagement thereby, a sheave for each belt at a point remote from the rolls, and a vertically adjustable tension mounting -for each sheave whereby to maintain its associated belt taut, the several tension mountings being independently adjustable whereby to vary the vertical position of each sheave and, in consequence thereof, the distance oi' separation between each pair of delivery belts.

9. In a take-ofir mechanism for shingles severed from a sheet, the combination of a pair of rolls through which the shingles are processionally advanced sde by side, means for adjusting the two rolls relatively toward and from each other whereby to vary the distance therebetween, a plurality oi endless delivery belts arranged in pairs, one over the other, each being extended over one of the two rolls in such manner as to receive therefrom a succession of shingles between the lower run of the upper belt and the upper run of the lower belt for engagement thereby, a sheave for each belt at a point remote from the rolls, a tension mounting for each sheave whereby to maintain its associated 4belt taut, and means for securing each sheave independently in a selected POsition of adjustment in a vertical plane whereby to vary the clearance between the adjacent runs of each pair of delivery belts at the'discharge end thereof "and to change the inclination, either upwardly or downwardly, of the adjacent runs of each pair oi delivery belts whereby to vary the elevational point of the discharge end thereof.

10. In a take-oil' mechanism for shingles severed from a' sheet, the combination of a pair rolls through which the shingles are processionally advanced side by lside, means for adjusting the two rolls relatively toward and from each other whereby to vary the distance therebetween,

a plurality of endless delivery belts arranged in pairs, one 'over the other, each being extended over one of the two rolls in such manner as to receive therefrom a succession of shingles between the lower run of the upper belt and the upper run of the lower belt for engagement thereby, a sheave for each belt at a point remote from the rolls, a pivoted vstrut affording a tension mounting for each sheave whereby 'to maintain its associated belt taut, and means for securing each sheave independently in `a selected position of' adjustment in a vertical plane whereby to vary the clearance between the adjacent runs of each pair of delivery belts at the discharge end thereof and to change the inclination, either upwardly or downwardly, of the adjacentiruns of each pair of delivery belts whereby to' vary the elevational point of the'dlscharge end thereof.

ll. In a take-ofi' mechanism for'shingles severed from a sheet, the combination of a pair of rolls through which the shingles are processionally advanced side by side and, adjacent thereto, a plurality of delivery belts arranged in pairs, one over the other, in such manner as to receive a succession of shingles between the lower runv of the upper belt and the upper run of the lower belt for'engagement thereby, a sheave for each belt at a point remote from the rolls, means for maintaining each belt taut, and releasable locking means for each sheave comprising two'members interconnected for pivoted sliding movement adapted to support the sheave at a selected vertical point.

12. In a take-o5 mechanism for shingles severed from a sheet, the'combination of a pair of rolls through which the, shingles are processionally advanced side by side and, adjacent thereto. a plurality of delivery belts arranged in pairs, one over the other, in such manner as to receive a succession of shingles between the lower-run of the upper belt and the upper run of the lower belt for engagement thereby, a sheave for each belt at a point vremote from the rolls, a mounting for each sheavemovable' both vertically and toward and from its companion roll, means exerting a pressure toward the movable mounting in a direction away from its companion roll whereby to` maintain the supported belt taut, and a releasable locking means for each sheave mounting adapted for the adjustable support thereof whereby to vary the vertical position of each sheave and, in consequence thereof, the distance of separation between each pair oi delivery belts, the several pairs of delivery belts being divergingly i adjustable, each independent of the others, in

vertical planes.

13. 'I'he combination of a take-ofi' mechanism for shingles .which are severed from a slitted traveling sheet passing between two sets of opposed feeding and pulling rolls, of a belt traveling between two sets of rollsin supporting engagement with the sheets, co-acting idler rolls between the sets of feeding and pulling rolls arranged respectively above and below the sheet and supporting belt adapted to exert a compressive force thereupon, and 'an adjustable mounting for the co-acting idler rolls such that they may be shifted.

longitudinally of the sheet and its supporting belt toward or from either of the feeding or pulling rolls.

aims l j Y.

` i4. m 'a take-os mechanism miA shingles severed from a sheet, the combination of a pairMbf cooperating pulling rolls through which the shingles are processionally advanced side by side, said rolls including a plurality of upper and lower sheaves with pulling and delivery belts extending aroimd said rolls and-sheaves, adapted lto engage 'a succession of shingles between the opposed faces of the belts, vertically adjustably supporting means for each sheave whereby to position each supported belt independent, and divergingly in respect, of the remaining belts and, in conse,- quence thereof, in a desired spacial relation to the other belt in .the same pair, and means cooperating with the discharge end of each belt for the transfer of shingles therefrom to a desired station.

l5. In a take-off mechanism for shingles severed -from a sheet, the combination of a plurality of relatively wide endless conveyor belts havingY upper runs all in a common plane and, spaced 1therefrom but proximate to the discharge end thereof, a pair ofrolls one above and the other below the line of advance of the upper run of the conveyor belts whereby shingles carried thereon, side by side, are adapted to be processionally transferred therefrom, specially and without appreciably exation, into the nip between the rolls, a plurality of upper and lower sheaves, relatively narrow upper and lower delivery belts extending around the upper and lower rolls and sheaves, respectively, adapted to receive between them, and engage opposite faces of, a succession of shingles, means for urging each sheave away from its companion roll whereby to maintain the supported belt taut, and a support foreach sheave vertically adjustable independently of the remaining supports whereby to raise or lower the discharge end of each pair of delivery belts as well as to vary the distance of separation therebetween.

16. In a sheet feeding machine having a takeoff mechanism, the combination of a plurality of side by side endless conveyor belts constituting one unit and, spaced therefrom but proximate to the discharge end thereof, a-second unit comprising a pair of rolls one above and the other below the line of advance of the upper runof the conveyor belts whereby sheet material carried thereon is adapted to be transferred therefrom through space into the nip between the rolls, a plurality of upper and lower sheaves at points remote from the rolls, a plurality of pairs of upper and lower endless delivery belts extending in straight runs between the upper and lower rolls and sheaves and therearound, respectively,

adapted to receive between them, engage opposite faces of, and advance in a straight line, sheet -material received from the conveyor belts, means for urging each sheave away from its companion roll whereby to maintain the supported belt taut,

` means supporting each sheave independently of the remaining sheaves adjustably at a selected elevational point in a manner whereby to raise or lower the discharge end of each pair of delivery belts and to vary the distance of separation therebetween at such point, and means for adjusting the two rolls relatively towardv and from each other whereby to vary the distance of separation between each pair of delivery belts at a point oppo site -the discharge ends thereof to accommodate and advance therebetween sheet material of a given thickness, the advance of the sheet material from beginning to end being in a straight succession of the loss shingles between opposedy faces of the belts, means supporting certain pairs of the belts and sheaves in divergent relations to other pairs of the belts and sheaves, and means cooperating with the discharge end of each belt for the transfer of shingles therefrom to a desired station.

OWEN D. MCFARLAND. ALFRED O. MICKELSON.

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